An artificial pacemaker supplements the actions of
A) sympathetic nerves.
B) the atrioventricular node.
C) the medulla oblongata.
D) the sinoatrial node.
E) the heart muscle itself.
Correct Answer:
Verified
Q27: The nervous system
A) acts only to adjust
Q28: The aorta leaves the
A) left atrium.
B) right
Q29: The structures that connect neighboring cardiac muscle
Q30: Which of the following statements is false?
A)
Q31: Diastolic pressure is
A) the lowest blood pressure
Q33: Blood from the systemic circuit is first
Q34: Which vein collects blood from the head,
Q35: Which of the following is NOT a
Q36: Heart excitation originates in the
A) atrioventricular node.
B)
Q37: Blood pressure is measured in
A) millimeters of
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